Electric heater



Patented Aug.

:LLiE

T. M. FEDEH.

ELECTRIC HEATER. APPLICAHDN min 0:01,!921.

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M w m UNITED STATES PATENT OFFICE.

TOBIAS M. FEDER, OF BROOKLYN, NEW YORK.

ELECTRIC HEATER.

Application filed December T 0 all whom it may concern:

Be it known that I, Tomas M. Fenian, a citizen of the United States.residing at Brooklyn, in the county of Kings and State of New York, haveinvented certain new and useful Improvements in Electric Heaters. ofwhich the following is a specification.

This invention relates to electrically gen era-ted heaters-{and hasparticular reference to that type which can be screwed into a, commontype of socket used for lighting .fixtures in the average building, andthe main object is to provide a heater which can be adjusted to anyangle in any universal plane and thereby project the heat raysdownwardly or in any other desired direction.

Another ob'ect is to provide a reflector which will re ect the heat raysdownwardly thus diffusing the heated air over a greater area than wouldbe possible if directed upward] from its source.

Still another object is to provide a heatin device having extremeinterchangeabi ity of parts, effective and simple in opertion andcomparatively inexpensive in cost of manufacture.

These and other objects will become apparent in the description below inwhich characters of reference refer to the likenamed parts in thedrawings.

Referring briefly to the drawing- Figure 1 is a transversely sectionedelevational view of the dBVlCG SlIOWiDg the constituent members inplace.

Figure 2 is a longitudinal elevation of the device having the reflectorand heating element remove Figure 3 is a bottom into the reflector end.

Figure 4 is an enlarged fragmentary section of the ball joint andillustrates the novel means of securin the suspended portion in andesired angu ar position.

i ure 5 is a side elevation of the heatcoil anging stud.

Referring more in detail to the drawing. the numeral 10 indicates atubular shell having a Shoulder surmounted by the collar 11 formed atits upper end. A hollow sleeve 12 preferably of some insulating materialis riveted to the exterior surface of collar ll and extends upwardlytherefrom. A flanged cover 14 is secured to the upper end of shell 12and has a centrally formed contact lug 15 thereon.

plan view looking Specification of Letters Patent.

Patented Aug. 15, 1922.

Serial No. 520,529.

Member 13 is fitted over sleeve 12 and has rounded-thread5 l6 thereon.by which the entire device can be secured in the socket fixture of anelectrical circuit.

The lower end of shell 10 is formed into a pair of spaced parallel ears17 having threaded holes therein and in which are secured the screws 18,

Screws l8 thread into the opposite sides of ball 19 and retain the samebetween the ears 1?. Similar screws 18' are threadably secured to theball 19 atright angles to screws l8 and engage ears 21 thereby formingsuspension pivots for the lower shell 22. It is apparent from Fi ures 1and 2 that the shell 22 can be rotate in two planes about the centerformed by ball 19 thus permitting a universal radial adjustment of thesuspended shell 22 with respect to the upper shell 10.

he lower end of shell 22 forms a sleeve 23 to which is attached aparabolic-shaped reflector 24 having its internal surface 26 burnishedso as to reduce heat radiation through the reflector to a minimum.

Brackets 25 riveted to the inner surface of sleeve 23 extend downwardlyand have a metallic spheroidal sector 27 secured thereto.

A lurality of opened eyes 30 having threadbd stems 29 by which they areattached to the underside of member 27. are adapted to receive a heatincoil 32 arranged in the form of a spiral. Vhen assembling the eyes 30are open and have a heat insulating strip 31, preferably of mica,cemented in lace between the ears. When attached to t ieir proper placeon member 27 the heatcoil 32 is next inserted between the ears afterwhich the latter are bent around the coil so as to form a splitretaining eye and consequently readily accommodating itself to theinherent expansion and contraction due to the extreme temperature changewhen putting into or taking out of use.

Member 27 is preferably made of a hea resisting material. As the coil 32is in a state of continual incandesccncc during use. an additional micaplate 28 is retained between the coil and member 27 so as to preventoxidation and further insulate both members from each other.

In order to retain the shell 22 in the various angular positions screws18 and 18' are provided with square projections 35 upon which are.slidably secured radially corrw gated Washers 37. Similarly corrugatedwashers 38 are secured in the hole 3.) by means of a forced hit. FromFigure 4 it is apparent that by moving the ball 19 angularly. the washer38 will he rotated coming to rest again in one of the other corrugatedrecesses of fixed washer 37. .\s the latter is urged into contact withwasher 238 by the spring 36. it will he seen that the movable lowershell will he releasablv held in any desired position until furtheradjustment is made.

In use. the upper end is threaded into a socket fixture. through member13 and 14 which have wires 33 and 34 res iectively, secured thereto. Thesaid \vires extend downwardly through upper shell to and enter the lowershell 22 through the hole 20 in hall 19. after which they are joined tothe inner and outer ends of the spiral coil 32 thus com pleting thecircuit.

It is to he understood that eertaiu changes inform and Strl1('tllle.$urh as arranging the heating coilsinto difi'erent groupings. maybe made. without departing from the spirit and scope of the invention.

\vire guard 40 secured over the open end of reflector 26 is provided soas to pre vent a person from tampering with the coil or otherwiseendangering the same.

I claim:

1. An electric heating device eoni 'n'ising an upper and lower shellmember. a para holic reflector secured to the lower member. means forenergizing a heating coil and means for securing the deviqe in a socket.

2. An electric heating deviee comprising upper and lower shell members.a threaded sleeve secured to the upper shell member a cover memher abovethe shell member, an insulating sleeve adapted to separate the threadedsleeve from the cover secured to the upper shell member and means forenergizinga heating roih 3. An electric heating device comprising upperand lower shell members. a ball pivotally suspended between ears of theupper shell member, said lower member having similar ears pivotaliyattached to the said ball at right angles to the upper shell memher, aparabolic reflector secured to the lower shell member and adapted toreflect heat rays downwardly, means for releasably retaming the lowershell in angular position and means for securing the device in a socket.

4. An electric heating device comprising an upper shell member having athreaded contact sleeve and a contact cover secured thereto, a lowershell, :1 ball pivotally connecting the shell members to each other, aspheroidal sector secured to lower shell. open-ended eye studsthreadably secured to the underside of the spheroidal sector. a

heating coil secured within the eye studs.

wires extending downwardly through the several shell members connectingthe, contact plates with the heating coil and means for releasablyretaining the lower shell in any angular position.

5. An electrical heating device comprising upper and lower shell membershaving ears formed to their adjacent ends, a ball member forming auniversaljoint between the said shells, screws threadably engaging theears of the shell members and the ball. a square stud extending fromsaid screws. ra dially corrugated washers secured in holes in the ballmember, similarly corrugated washers slidably mounted on the squarestuds, and adapted to releasably engage the aforesaid washer, springsretained on the said studsand adapted normally to urge the washers intomutual contact with each other. and means for energizing a. heatingcoil.

In witness whereof I afiix my si nature.

TOBIAS'M. FE ER.

